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Overview

Proxy for Cargo (Rust build tool) with token-optimized output. Shows only relevant build information and test failures.

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Syntax

rtk cargo <SUBCOMMAND> [OPTIONS]

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Subcommands

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rtk cargo build

Build with minimal output. 
rtk cargo build [OPTIONS]
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--release
flag
Build optimized artifact
Output (success): 
✓ Compiling rtk v0.24.0
✓ Finished in 12.3s
Output (failure): 
✗ Error in src/main.rs:42:18
   | expected `;` after expression
Token savings: 85%

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rtk cargo test

Run tests, show only failures. 
rtk cargo test [OPTIONS]
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--
separator
Pass additional arguments to test binary
Output (passing): 
✓ 15/15 tests passed (0.8s)
Output (failures): 
✗ 2/15 tests failed:

test_edge_case (src/lib.rs:142)
  assertion failed: expected 42, got 43

test_overflow (src/utils.rs:89)
  thread panicked: arithmetic overflow
Token savings: 90%

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rtk cargo clippy

Lint with grouped warnings. 
rtk cargo clippy [OPTIONS]
Output: 
⚠️  3 warnings:

src/main.rs (2)
  L42: unnecessary allocation (clippy::vec_box)
  L98: variable can be const (clippy::declare_interior_mutable_const)

src/lib.rs (1)
  L67: this function can be simplified (clippy::needless_return)
Token savings: 80%

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rtk cargo check

Type-check without building. 
rtk cargo check [OPTIONS]
Output: 
✓ Check completed in 3.2s

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rtk cargo install

Install binary, show progress summary. 
rtk cargo install <CRATE>
Output: 
✓ Installed rtk v0.24.0
   Binary: ~/.cargo/bin/rtk
Token savings: 92%

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Examples

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Build Release Binary

rtk cargo build --release

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Run Tests with Nocapture

rtk cargo test -- --nocapture

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Lint All Targets

rtk cargo clippy --all-targets

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Features

  • Failures only: For tests, only shows failed cases with context
  • Grouped linting: Clippy warnings grouped by file and rule
  • Progress stripping: Removes compilation progress bars
  • Error context: Shows file location and relevant code snippet

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Implementation

Source: src/cargo_cmd.rs

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Optimizations

  • Strips “Compiling (N/M)” progress lines
  • Removes dependency compilation messages
  • Groups similar warnings/errors
  • Formats durations compactly (“3.2s” vs “3.234567s”)

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Token Savings Summary

CommandStandardRTKSavings
build (success)~1200 tokens~180 tokens85%
test (passing)~3000 tokens~300 tokens90%
clippy~2000 tokens~400 tokens80%
install~1500 tokens~120 tokens92%